Installation and Operation Manual
14.
Excess length of tie rods must be sawed off so they
will not extend beyond end sections. Rods should
project equally
at
each end to insure proper fit of
the jacket.
See Figure
11
for complete boiler section assem-
blage. Illustration shows boiler equipped with sec-
tions for built-in water heater.
B. Assembly of Sections (Hydraulic Draw-Up)
The entire assemblage may be drawn up at one time
using hydraulic draw-up equipment providing the
op-
eration is completed within four hours after applica-
tion of the sealant.
"Hydraulic Draw-Up Equipment" is available through
Burnham by ordering part number
6196008.
1.
Repeat steps
1
through
9
under "Assembly of Sec-
tions (Manual Draw-Up)
."
2.
Continue driving sections in place (in their respect-
ive order) until all sections are in the assemblage.
Ground surfaces between adjoining sections should
be spaced
%"
to
%"
apart.
Spacing of more than
%"
will limit number of sections that can be drawn
up in one unit and could indicate cocked nipples.
Be sure to apply the sealant to the groove in the
ground joints between adjacent sections as the boil-
er operates with a positive pressure
'in the firebox
and products of combustion will escape between
sections unless the secti'ons are properly sealed. The
sealant should be applied before each section is
placed on the assemblage.
On long boiler assemblies, it may be necessary to
draw-up a partial block if the entire boiler is not
ready to be drawn-up tight within four hours of
the first application of Silastic.
If the block as-
sembly time extends overnight, the partial block
completed must be drawn-up tight before leaving
the boiler overnight. If a joint springs out, it must
be re-drawn tight within four hours of first appli-
cation of Silastic to the joint.
3.
Insert the three
%"
draw-up rods (and couplings if
appropriate) through the tapped holes in the rear
section extending them through the tapped holes
in the front section. Be sure to screw draw-up rods
illto couplings far enough to prevent stripping
threads.
4.
Place a
12"
lg. steel channel on each end of the
upper draw-up rod and an
8%"
lg. steel channel
on
each end of the lower draw-up rods.
Install
nuts
and washers on one end of the draw-up rods and
the
hydraulic rams, washers
and
draw-up
rod
elampe
on the other. See Figure
12.
5.
Draw-up Sections.
READ THE STATEMENTS BELOW BEFORE AT-
TEMPTING TO USE HYDRAULIC EQUIPMENT.
-
RELEASE PRESSURE IN RAM PUMPS BE-
FORE ATTEMPTING TO REMOVE CLAMPS.
-
DO NOT STAND IN LINE WITH DRAW-UP
RODS AT EITHER END WHEN HYDRAULIC
PRESSURE IS BEING APPLIED.
AS A 'SAFE-
TY MEASURE, ENDS OF DRAW-UP RODS
SHOULD BE COVERED WHILE SECTIONS
ARE BEING DRAWN IN CASE RODS SHOULD
SNAP WHILE UNDER TENSION.
-
DO NOT OPERATE RAM AGAINST DRAW-UP
COUPLING.
-
DO NOT OPERATE PUMP AFTER RAM HAS
REACHED 'STROKE LIMIT.
Use hydraulic rams to draw up sections by applying
pressure alternately on the draw-up rods. When
rams reach stroke limit, release pressure in ram
pumps and then move clamps to new position.
KEEP NIPPLES ALIGNED WITH NIPPLE
PORTS. If necessary, tap nipples tightly with a
blunt tool or rod to keep nipples from cocking while
sections are being
drawn up. DO NOT DRAW UP
SECTION WHEN NIPPLES ARE COCKED. Con-
tinue tightening draw-up rods equally, periodically
bumping the section with the heavy block of wood
to relieve tension .on the draw-up rods, until sec-
tions meet iron-to-iron on the ground surfaces.
6.
.Continue to draw-up until all sections make contact
at the ground joints.
7.
Repeat steps
13
and
14
under "Assembly of Sec-
tions (Manual Draw-Up)
."
Rods should be approximately centered in openings
so that rods and couplings (when used) do njot drag
on pipe thread in end section tappings.